Pulverizer.



PATBNTBD APR. so, 1907..

G. J. BELSTNBR.

PULVBRIZER. APPLIOATION :FILED JULYQ. 1906.

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No. 052,000. r PATBNTBD m1030190?.

G. J. BELSTNER.

PULVBRIZER. APPLICATION FILED JULY 0, 1006.

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GEORGE J. BELSTNER, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO WALTER II. STONE, OF CHICAGO, ILLINOIS.

PULVERIZER.

Patented April 30, 1907.

Application iiled July 9,1906. Serial No. 325,294.

To ctZZ whom, t may concern:

Be it known that I, GEORGE J. BELs'rNEn,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Iulverizers, of which the following is a specification. This invention relates to pulverizing machines; and, while capable of general use as a pulverizer, is designed and intended more particularly for pulverizing caustic soda and like materials.

The novel features of the present inventio'n relate principally to improvements in the grinding or pulverizing mechanism proper, but also include a novel mounting` of the pulverizer in connection or combination with a mechanism for opening the containing receptacles of the material to be pulverized and directing` the feed of the latter into the pulverizer.

Caustic soda in commercial form usually comes from its place of manufacture put up in sealed metal drums, weighing approximately three hundred pounds, which drums must first be opened to get at the contained material preliminary to the introduction of the latter to the pulverizer proper. To expedite the handling of these receptacles I have, as above stated, provided in association with the pulverizer proper, a convenient support and slideway for the drum adapted to bring one end of the latter directly above the feed opening of the pulverizer, and a device for ripping or tearing open the end of the drum to permit the material to flow therefrom into the pulverizer.

The invention will be readily understood when considered in connection with the accomp anying drawings, which illustrate a preferred mechanical embodiment thereon, and in which- Figure 1 is a side elevational view, broken off at the lower end, of the complete'apparatus, Fig. 2 is a side elevational view with the ulverizer shown in central vertical section; Fig. 3 is a face view of the pulverizer casing with one side wall thereof and the rotatable grinding disk removed, more particularly showing the grinding face of the stationary disk and the grinding teeth on one wall of the inclined discharge opening; Fig. 4 is a face view of the rotatable grinding disk; Fig. 5 is a i fragmentarylview of a portion ofthe rotatable grinding disk, more particularly showing the form and arrangement of the teeth on the beveled periphery thereof and Fig. 6 is a similar fragmentary view of a portion of the lower edge of the casing, more particularly showing the form and arrangement of grinding teeth on the wall of the discharge opening.

Referring to the drawings, l() indicates as an entirety a rectangular upright skeleton frame, on which the pulverizer and its auxiliary mechanism are mounted. The casing of the pulverizer proper is of circular form and comprises, as herein shown, a cylinder 1l, one side wall of which .is integral, while the other side wall, for the purpose of assembling the parts, takes the form of a removable cover l2 secured to said cylinder by any suitable means'. The casing thus formed is rigidly mounted in a vertical plane in the frame l0, as byscrews I3 passed through the framemembers and screwed into the casing; and through the center of the casing passes a driving shaft la that may be provided on one end with a pulley or other suitable driving means indicated at 15.

Within the casing l1 are located a pair of grinding disks one of which, designated by 1G, is stationary, the shaft le loosely passing therethrough, and has its inner grinding face oblique or inclined, as indicated at I7 in Fig. 2. Keyed or otherwise secured on the shaft 14 is lthe rotatable grinding disk 1S, the grinding face of which is in a vertical plane, as indicated at I9. The opposed and inner faces of the disks are roughened to provide suitable grinding surfaces, which roughening may be effected in a variety of ways, ut preferably and as herein shown is effected by means of radial raised ribs or teeth 20 and 2l, respectively. The periphery of the rotatable grinding disk 1S is beveled, as shown, and is also provided with grinding teeth. Certain of these latter teeth marked 22 are disposed radially; while between each pair of radial teeth are located a pair of shorter intermediate teeth 23 and 24, both of which latter are inclined relatively to the teeth 22, as best shown in the fragmentary view, Fig. 5, the teeth 24 being slightly shorter than the teeth 23.

The pulverizer casing is provided at its upper end with a radial feed opening 25 leading to the space between the grinding'ldisks;

and said casing isffurther provided at its IOC lower end with an inclined discharge opening I t0 26 ,that lis formed between the inner circular l wall ofAthe cylinder 11 and-the beveled periphery of the rotatable grinding disk 18. Said discharge opening in turn communicates with a short vertical recess 27 formed opposite the same in the inner face of the lower end of the cover 12, through which the pulverized material drops into a suitable receptacle (not shown). That wall of the discharge opening 26 which is formed on or by thefinterior wall of the cylinder 11 is rovided with radial and inclined teeth 28, 29 and 30, corresponding in relative arrangement with the teeth on the periphery of the rotatable grinding disk 18.

In operation, the caustic soda or other material to be pulverized is fed into the casing through the feed-opening 25, and is ground to increasing fineness as it passes from the upper wide end to the lower contracted end of the space between said disks, the final and finest grinding, in which the material is reduced to powder form or pulverized, being effected during the passage of the material through the discharge opening 26, where it is acted upon by the co-operating grinding teeth on the wall of the opening and the periphery of the grinding disk, respectively.

Referring now to those auxiliary or ancillary features whereby the pulverizer is especially adapted for use in the reduction of materials delivered in drums or cylinders, on the upper end of the supporting frame 10 I mount an inclined slideway to support the drums or cylinders and position them favorably for the discharge of their contents into the pulverizer. This slideway may be variously constructed, but as herein shown is conveniently formed by means of a pair of metal bars 31 rigidly secured to the top of the' frame 10 as by screws or bolts 32 passing through spacing sleeves 33 mounted on the upper end of the frame 10, the outer end portions of said bars being bent downwardly in an inclined direction, as shown at 34 to form the slideway proper, said inwardly turned portions being also in-set relatively to the horizontal portions 31, as best shown in Fig.` 1, so as to provide a sufficiently wide space between the horizontal members 31 for the introduction of a drum onto gthe inclined bars 34. Journaled in suitable bearings 35 in hangers 36 suspended from the inner ends of the bars 31 is a shaft 37 provided on its outer end with a pulley or other driving means 38 and on its iimer end with a disk 39 which is disposed opposite and across the inner end of the slideway 34. On the face of the disk 39 adjacent to the inner end of the slideway 34 are mounted a series of pointed spikes or teeth 40, the function of which is to tear open the inner lower end of a drum after the latter has been placed on the slideway 34, in order permit the material contained therein to flow readily down into the pulverizer through the feed-opening 25. The provision of this mechanism obviates the necessity of first opening the drums before delivering their contents to the pulverizer, and saves the time and labor consequent thereon.

It will be evident to those skilled in the art that the particular embodiment herein shown and described might be considerably modified and varied in respect to minor details without departing from the principle of the invention or sacrificing any ofthe advantages thereof.` Hence, I do not limit the invention to the specific construction and arrangement of elements shown, except to the eXtent indicated in specic claims.

I claim:

1. In a pulverizer, the combination with a circular casing disposed in a vertical plane and having a radial feed opening at its upper end and an inclined discharge-opening at its lower end one wall whereof is provided with grinding teeth, of a pair of relatively inclined disks in said casing having flat opposed grinding faces, one of said disks having a beveled periphery provided with grinding teeth co-operating with the grinding teeth of said discharge opening, substantially as described.

2. In a pulverizer, the combination with a circular casing disposed in a vertical plane and having a radial feed opening at its upper end and an inclined discharge opening at its lower end one wall whereof is provided with grinding teeth, ofrotatable and stationary disks in said casing having flat vertical and oblique opposed grinding faces, respectively, said rotatable disk having a beveled periphery provided with grinding teeth co-operating with the grinding teeth of said discharge opening, substantially as described.

3. In an apparatus of the character described, the combination with a supporting frame, of a pulverizer mounted thereon having a feed opening at its upper end, a slideway for drums containing the material to be pulverized mounted on said frame above the pulverizer, and a drum-opening device mounted on said frame opposite the inner end of said slide-way, substantially as described.

4. In an apparatus of the character described, the combination with a supporting frame, of a pulverizer mounted thereon having a feed opening at its upper end, an inclined slide-way for drums containing the material to be pulverized mounted on said frame above the pulverizer, and a rotary drum-opening dev ce mount-ed on said frame opposite and across the inner end of said slide-way, substantially as described.

5. n an apparatus of the character described, the combination with a supporting frame, of a pulverizer mounted thereon hav- IOO IIO

ing a feed opening at its upper end7 afslidee I ner end of the drum to e'fleet the discharge of Way for drums containing the material to be the material therefrom7 substantially as depulverized mounted on said frame above the scribed. pulverizei'7 a rotatable disk mounted on said GEORGE 1J. BELSTNER. frame opposite and across the irme-f end of Vitnesses. "ai" fj said slide-Way, and spikes or teeth on the FREDERICK C. GrooDWIN...4 face of said disk adapted to tear operi the in- SAMUEL N. POND. 

